Mohammadpoor-Baltork, I.; Moghadam, M.; Tangestaninejad, S.; Mirkhani, V.; Zolfigol, M. A.; Hojati, S. F. published the article 《Silica sulfuric acid catalyzed synthesis of benzoxazoles, benzimidazoles and oxazolo[4,5-b]pyridines under heterogeneous and solvent-free conditions》. Keywords: orthoester aminophenol phenylenediamine aminopyridinol cyclization silica sulfuric acid catalyst; benzoxazole preparation orthoester aminophenol cyclization silica sulfuric acid catalyst; benzimidazole preparation orthoester phenylenediamine cyclization silica sulfuric acid catalyst; oxazolopyridine preparation orthoester aminopyridineol cyclization silica sulfuric acid catalyst.They researched the compound: 2-Ethylbenzo[d]oxazole( cas:6797-13-3 ).Synthetic Route of C9H9NO. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:6797-13-3) here.
A simple, rapid and efficient method for the preparation of benzoxazoles, benzimidazoles and oxazolo[4,5-b]pyridines from the reaction of orthoesters with o-aminophenols, o-phenylenediamine and 2-amino-3-hydroxypyridine in the presence of silica sulfuric acid under heterogeneous and solvent-free conditions is reported. The significant features of this method are short reaction times, high yields of the products, mild reaction conditions, solvent free reaction, cheapness, non-toxicity and reusability of the catalyst.
There are many compounds similar to this compound(6797-13-3)Synthetic Route of C9H9NO. if you want to know more, you can check out my other articles. I hope it will help you，maybe you’ll find some useful information.
Reference:
Benzoxazole – Wikipedia,
Benzoxazole | C7H5NO – PubChem